<!DOCTYPE html>
<script src="../include.js"></script>
<style>
#a { --foo: "Hello"; }
#b { --bar: var(--foo) "world!"; }
</style>
<div id="a"><div id="b"></div></div>
<script>
    test(() => {
        println(getComputedStyle(document.getElementById("b")).getPropertyValue("--bar"));
    });
</script>
